Global Patent Index - EP 1065181 A2

EP 1065181 A2 2001-01-03 - Coated optical fiber with increased modulus and thermally enhanced strippability

Title (en)

Coated optical fiber with increased modulus and thermally enhanced strippability

Title (de)

Beschichtete optische Faser mit erhöhtem Modul und verbesserter thermischer Abziehbarkeit

Title (fr)

Fibre optique revêtue ayant un module accru et une dénudabilité thermique améliorée

Publication

EP 1065181 A2 (EN)

Application

EP 00305197 A

Priority

US 34261199 A

Abstract (en)

In accordance with the invention, an optical fiber is provided with a protective coating having enhanced thermal characteristics for easy removal from the optical fiber. In particular, at elevated temperatures used in stripping, the delamination resistance drops to low levels substantially independent of modulus. This permits fabrication of a protectively coated fiber which has relatively high modulus and delamination resistance at room temperature but, due to its enhanced thermal characteristics, is nonetheless relatively easy to strip at elevated temperatures. Thus, for example, applicants can provide a protectively coated optical fiber or ribbon with a room temperature modulus of at least 90 psi, and a high temperature delamination resistance that is less than 40% of the room-temperature delamination resistance and preferably less than 30%. Coatings based on a polyether backbone and non-polar monomers are preferred. <IMAGE>

IPC 1-7 (main, further and additional classification)

C03C 25/10; G02B 6/44

IPC 8 full level (invention and additional information)

G02B 6/44 (2006.01); C03C 25/10 (2006.01); C03C 25/24 (2006.01); C09D 4/06 (2006.01)

CPC (invention and additional information)

C09D 4/06 (2013.01); C03C 25/106 (2013.01); C03C 25/1065 (2013.01); G02B 6/4402 (2013.01); G02B 6/443 (2013.01)

Combination set (CPC)

  1. C09D 4/06 + C08F 290/062
  2. C09D 4/06 + C08F 290/061

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1065181 A2 20010103; AU 4252100 A 20010104; CA 2312535 A1 20001229; CN 1279217 A 20010110; CN 1298647 C 20070207; JP 2001056423 A 20010227; US 6243523 B1 20010605

INPADOC legal status


2005-07-20 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040701

2001-01-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-01-03 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI